Finding the Fourth Proportional to 1,788,486,646.80, 2,682,729,970.20 and 561,779,101.20
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Solution
The fourth proportional to 1,788,486,646.80, 2,682,729,970.20 and 561,779,101.20 is: 842,668,651.80
Step by Step Solution
- Step 1: Write the proportion equation
1,788,486,646.80 : 2,682,729,970.20 = 561,779,101.20 : x - Step 2: Convert to fraction form
1,788,486,646.80/2,682,729,970.20 = 561,779,101.20/x - Step 3: Cross multiply
1,788,486,646.80x = 2,682,729,970.20 × 561,779,101.20 - Step 4: Simplify right side
1,788,486,646.80x = 1,507,101,631,421,258,752 - Step 5: Solve for x
x = 1,507,101,631,421,258,752/1,788,486,646.80 - Step 6: Final answer
x = 842,668,651.80
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.